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(No Model.) 2 Sheets-Sheet I. J. R. BURVILLE.

V I MUSIC LEAF TURNER. No. 250,881. I Patented Dec.13.,1881.

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(No Model.) 2 Sheets Sheet 2.

J. R. BURVILLE.

I MUSIC LEAF TURNER. v No. 250,881. Patented Dec. 13,1881.

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UNITED STATES PATENT OFFICE.

JAMES R. BURVILLE, OF BAINBRIDGE, OHIO, ASSIGNOR TO HIMSELF AND WILLIAMF. HUGHEY, AND JAMES V. M'OMANN, BOTH SAME PLACE.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters Patent No. 250,881, dated December13, 1881.

Application filed July 2, 1881. (No model.)

To all whom it may concern:

Be it known that I, JAMES REYNOLDS BUR- VILLE, o'f Bainbridge, in thecounty of Ross and State of Ohio, have invented a new and usefulImprovement in Music-Leaf Turners, of which the following is a full,clear, and exact description, reference being had to the drawings heretoannexed.

In the aceompanyingdrawings, Figure 1 represents a front view of myinvention as applied to the the key-hoard of a piano. Fig. 2 is a frontelevation of the device with the internal construction exposed to view,and Fig. 3 is a central vertical cross-section.

The frame-work of my invention consists of three parts, the upperportion of which is inclined slightly from a perpendicular forsupporting abook of musicin a convenient manner, the central orhorizontal portion, and the lower or perpendicular portion, whichsupports the keys near the key-board of a musical instrument. The upperportion consists of a board, A, which is designed to be of suitable sizefor holding sheet-music, and is provided with a,

2 central rest, a, near its lower edge, and pins" with the rack-bar bthrough the opening in c at the sides for supporting the same. Guincords d are also provided for securing the leaves or cover of a book inposition.

Immediately below the rest a is a horizontal 0 slot, a extending nearlyacross the board A,

through which project a number of arms, b, which are adapted to beoscillated from one side of the board to the other to turn the leaves ofthe book. These arms are supported in a box, B, which is secured to therear side of board A, and consist in thin bars or strips of metal havingupright fingers b on their free ends, and being rigidly secured at theiropposite ends upon a number of sleeves, b respectively, which aretelescoped and mounted upon a rod, b which is provided with suitablebearings in the upper and lower sides of the box.

The fingers b consist in a flan ged loop,which is adapted to. be movedalong the arm, and

which is provided with two upright tines pivoted to opposite sides ofthe flange, and adapted to clamp a leaf between them.

Each of the sleeves b is provided with two spurs or levers, b which arearranged on the opposite side of the sleeve from the arm and inclinedfrom each other, so that they shall be operated in turn by twoadjustable lugs, D which are secured to the front side of a slide, 1),which is one-half the length of the box B, and adapted to be moved fromone end thereof to the other. As stated, a pair of lugs is provided foreach sleeve, and these are arranged diagonally across the slide, so thatthe sleeves, and through them the arms, shall be oscillated in regularsuccession, being turned to the right by moving the slide to the left,and vice versa. For operating the slide I) its lower edge is providedwith a rack-bar, D which projects through a slot in the lower side ofboxB into 6 a suitable groove, 0, in the upper surface of the board 0,which constitutes the central or horizontal portion of the device, asbefore stated. The undersurface ofboard U is provided with a centraltransverse recess, 0, which is cut through to groove 0 at the point ofintersection. In this recess is secured a shaft, 0 carrying a pinion,which is arranged to mesh the board. 5

The rear end of shaft 0 is supported in a perforated tongue, 0 which isrigidly securel to the lower edge of box B and projects through asuitable opening in board 0 into the recess 0, thereby assisting to holdthe said box and board together. Near the opposite end of shaft 0 whichis supported in a removable plate,is a second pinion, 0 which mesheswith a cogwheel, d, which is supported in a box, D, forming a part ofthe lower or perpendicular portion of my invention. This box D issuitably secured to the lower surface of board 0, near its front edge,and is adapted for supporting the mechanism by which the above-describedelements of the device are operated. The said 0 cog-wheeld is providedwith a suitable number of pins, (1, on its front surface, arranged nearits periphery, and it is loosely mounted upon a pintle, 62 which issecured in a verticallyadjustable manner to the rear inner surface of 5the box D.

On each side of the wheel d is a lever, (1 which is pivoted at its outerend between the rear inner surface of the box and a slotted adjustablebracket, d, which is secured in a recess in ledge d of the box. At theinner end of lever d is pivoted a second lever, 01", whose inner endprojects sufficiently toward the wheel to rest upon one of the pins 01when the latter is in position therefor. The outer end of lever (1 islimited in its oscillation by pins d on lever (1 To the lower portion ofthe inner end of lever (1 is pivoted the upper end of the key-stem d,which extends to the bottom of the box, and is held in position by theguide d at its lower end. As the key-stem is drawn downward the point oflever d engages with one of the pins on the wheel d, and causes thelatter to turn until the downward movement of lever (1 is arrested by astop, d secured to the rear inner surface of the box. To cause the saidlevers and key-stem to return to their normal or elevated position, asteel spring, d ,is secured to the ledge d of box D in such manner thatits plane surface will lie against the diagonal outer end of lever d andthus tend to hold the said leverin a given position. The key-stem withits levers on one side of the wheel causes the latter to turn in onedirection, and that upon the other side in the opposite direction; andeach depression of a keystem causes the wheel to turn far enough tobring the next pin in position to be reached by the lever (1 and eachsuccessive movement of the wheel (I, by means of the pinions and 0operates the rack-bar Z) and slide 1) to a degree sufficient foroscillating one of the arms from one side to the other of the board A.

Immediately below the wheel (1 is a pair of steel springs, d, havingtheir lower ends secured to opposite sides of a suitable bracket, sothat their upper ends, which diverge from each other, shall lie againstthe pins of the said wheel to retain the latterin position when notbeing acted on by the levers, and to prevent it from turning fartherthan is required.

The cog-wheel dis provided with a pinion, d, on its front surface, withwhich a springoperated thumb-nut or clutch, e, is made to engage inorder to correct any error in the device, or to turn the arms rapidlyfrom one side to the other. This thumb-nut is held out of gear withpinion (Z by a spring, 0, which is secured to the inner suit-ace ofboard E, which covers the box D. The thumb-nut e, which is arranged onthe outside of board E, needs to be pressed inward, therefore, in orderthat it may engage with the pinion 01 to operate the device.

At the lower edge of board E are slots 0 through which the keys 6project and have vertical movement when touched or depressed by thefingers of the performer; and as these keys are supported near thekey-board of a piano or organ, they may be easily operated withoutnecessitating the removal of the hand from the said key-board.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a music-leaf turner, the combination of slotted board A, havingrest a and pins a, and box B, having arms I), provided with adjustableclamping-fingers I), substantially as shown and described.

2. In a music-leaf turner, the combination, with box B, of oscillatingarms I), telescoped sleeves I), having spurs b, shaft 1), and slide bhaving adjustable lugs b ,which are arranged in pairs diagonally acrossthe same, and rackbar I), substantially as shown and described.

3. Ina music-leafturner, the combination of slotted box B, having slideb and raclebar N, with the horizontal board (J, having groove 0 in itsupper surface, and central transverse recess c in its under surface,perforated tongue 0*, shaft 0', and pinion 0 substantially as shown anddescribed.

4. In a music-leaf turner, the combination of horizontal board 0, havingshaft 0 and pinion 0 of the perpendicular box D, having cogwheel (1,substantially as shown and described.

5. In a music-leaf turner, the combination, with box D, of cog-wheel d,having pins d, levers d and d adjustable brackets d springs d, stops dkey-stems d", guides (1 and springs (1 substantially as shown anddescribed.

6. In a music-leaf turner, the combination of box D, having cog-wheel(Z, pinion (1' and lever-operating keys c and board E, having thumb-nuta, spring 6, and slots a, substan tially as shown and described.

JAMES It. BURVILLE.

Witnesses:

JAMES WOLFE, RUvELLo HUGHEY.

